package com.diandian.coolco.emilie.fragment;

import android.app.Activity;
import android.content.SharedPreferences;
import android.content.res.Configuration;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBarActivity;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.widget.Toolbar;
import android.view.LayoutInflater;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ImageView;
import android.widget.ListView;

import com.diandian.coolco.emilie.R;
import com.malinskiy.materialicons.IconDrawable;
import com.malinskiy.materialicons.Iconify;

import roboguice.fragment.RoboFragment;
import roboguice.inject.InjectView;

/**
 * Fragment used for managing interactions for and presentation of a navigation drawer.
 * See the <a href="https://developer.android.com/design/patterns/navigation-drawer.html#Interaction">
 * design guidelines</a> for a complete explanation of the behaviors implemented here.
 */
public class NavigationDrawerFragment extends RoboFragment implements View.OnClickListener {

    @InjectView(R.id.icon_search)
    private ImageView searchIcon;
    @InjectView(R.id.icon_collection)
    private ImageView collectionIcon;
    @InjectView(R.id.icon_history)
    private ImageView historyIcon;
    @InjectView(R.id.icon_recommend)
    private ImageView recommendIcon;
    @InjectView(R.id.icon_hot)
    private ImageView hotIcon;
    @InjectView(R.id.icon_account)
    private ImageView accountIcon;
    @InjectView(R.id.icon)
    private ImageView settingIcon;

    @InjectView(R.id.rl_collection)
    private View collectionSection;
    @InjectView(R.id.rl_search)
    private View searchSection;
    @InjectView(R.id.rl_history)
    private View historySection;
    @InjectView(R.id.rl_recommend)
    private View recommendSection;
    @InjectView(R.id.rl_hot)
    private View hotSection;
    @InjectView(R.id.rl_setting)
    private View settingSection;
    @InjectView(R.id.rl_account)
    private View accountSection;

    /**
     * Remember the position of the selected item.
     */
    private static final String STATE_SELECTED_POSITION = "selected_navigation_drawer_position";

    /**
     * Per the design guidelines, you should show the drawer on launch until the user manually
     * expands it. This shared preference tracks this.
     */
    private static final String PREF_USER_LEARNED_DRAWER = "navigation_drawer_learned";

    /**
     * A pointer to the current callbacks instance (the Activity).
     */
    private NavigationDrawerCallbacks mCallbacks;

    /**
     * Helper component that ties the action bar to the navigation drawer.
     */
    private ActionBarDrawerToggle mDrawerToggle;

    private DrawerLayout mDrawerLayout;
    private ListView mDrawerListView;
    private View mFragmentContainerView;

    private int selectedSectionViewId;
    private boolean mFromSavedInstanceState;
//    private boolean mUserLearnedDrawer;

    public NavigationDrawerFragment() {
    }

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        // Read in the flag indicating whether or not the user has demonstrated awareness of the
        // drawer. See PREF_USER_LEARNED_DRAWER for details.
//        SharedPreferences sp = PreferenceManager.getDefaultSharedPreferences(getActivity());
//        mUserLearnedDrawer = sp.getBoolean(PREF_USER_LEARNED_DRAWER, false);

        if (savedInstanceState != null) {
            selectedSectionViewId = savedInstanceState.getInt(STATE_SELECTED_POSITION);
            mFromSavedInstanceState = true;
        }

        // Select either the default item (0) or the last selected item.
        selectItem(selectedSectionViewId);
    }

    @Override
    public void onActivityCreated(Bundle savedInstanceState) {
        super.onActivityCreated(savedInstanceState);
        // Indicate that this fragment would like to influence the set of actions in the action bar.
//        setHasOptionsMenu(true);
    }

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
        return inflater.inflate(
                R.layout.fragment_navigation_drawer, container, false);
    }

    @Override
    public void onViewCreated(View view, Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        initIcon();
        initEvent();
    }

    private void initIcon() {
        searchIcon.setImageDrawable(new IconDrawable(getActivity(), Iconify.IconValue.md_search).actionBarSize().colorRes(R.color.drawer_item_icon));
        collectionIcon.setImageDrawable(new IconDrawable(getActivity(), Iconify.IconValue.md_favorite_outline).actionBarSize().colorRes(R.color.drawer_item_icon));
        historyIcon.setImageDrawable(new IconDrawable(getActivity(), Iconify.IconValue.md_bookmark_outline).actionBarSize().colorRes(R.color.drawer_item_icon));
        recommendIcon.setImageDrawable(new IconDrawable(getActivity(), Iconify.IconValue.md_filter_vintage).actionBarSize().colorRes(R.color.drawer_item_icon));
        hotIcon.setImageDrawable(new IconDrawable(getActivity(), Iconify.IconValue.md_explore).actionBarSize().colorRes(R.color.drawer_item_icon));
        accountIcon.setImageDrawable(new IconDrawable(getActivity(), Iconify.IconValue.md_filter_drama).actionBarSize().colorRes(R.color.drawer_item_icon));
        settingIcon.setImageDrawable(new IconDrawable(getActivity(), Iconify.IconValue.md_settings).actionBarSize().colorRes(R.color.drawer_item_icon));
    }

    private void initEvent(){
        collectionSection.setOnClickListener(this);
        searchSection.setOnClickListener(this);
        settingSection.setOnClickListener(this);
        accountSection.setOnClickListener(this);
        historySection.setOnClickListener(this);
        recommendSection.setOnClickListener(this);
        hotSection.setOnClickListener(this);
    }


    @Override
    public void onClick(View view) {
        selectItem(view.getId());
    }

    public boolean isDrawerOpen() {
        return mDrawerLayout != null && mDrawerLayout.isDrawerOpen(mFragmentContainerView);
    }

    /**
     * Users of this fragment must call this method to set up the navigation drawer interactions.
     *
     * @param fragmentId   The android:id of this fragment in its activity's layout.
     * @param drawerLayout The DrawerLayout containing this fragment's UI.
     */
    public void setUp(int fragmentId, DrawerLayout drawerLayout, Toolbar toolbar) {
        mFragmentContainerView = getActivity().findViewById(fragmentId);
        mDrawerLayout = drawerLayout;

        // set a custom shadow that overlays the main content when the drawer opens
        mDrawerLayout.setDrawerShadow(R.drawable.drawer_shadow, GravityCompat.START);
        // set up the drawer's list view with items and click listener

        ActionBar actionBar = getActionBar();
        actionBar.setDisplayHomeAsUpEnabled(true);
        actionBar.setHomeButtonEnabled(true);

        // ActionBarDrawerToggle ties together the the proper interactions
        // between the navigation drawer and the action bar app icon.
        mDrawerToggle = new ActionBarDrawerToggle(
                getActivity(),                    /* host Activity */
                mDrawerLayout,                    /* DrawerLayout object */
                toolbar,             /* nav drawer image to replace 'Up' caret */
                R.string.navigation_drawer_open,  /* "open drawer" description for accessibility */
                R.string.navigation_drawer_close  /* "close drawer" description for accessibility */
        ) {
            @Override
            public void onDrawerClosed(View drawerView) {
                super.onDrawerClosed(drawerView);
                if (!isAdded()) {
                    return;
                }

                getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
            }

            @Override
            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);
                if (!isAdded()) {
                    return;
                }

//                if (!mUserLearnedDrawer) {
//                    // The user manually opened the drawer; store this flag to prevent auto-showing
//                    // the navigation drawer automatically in the future.
//                    mUserLearnedDrawer = true;
//                    SharedPreferences sp = PreferenceManager
//                            .getDefaultSharedPreferences(getActivity());
//                    sp.edit().putBoolean(PREF_USER_LEARNED_DRAWER, true).apply();
//                }

                getActivity().supportInvalidateOptionsMenu(); // calls onPrepareOptionsMenu()
            }
        };

        // If the user hasn't 'learned' about the drawer, open it to introduce them to the drawer,
        // per the navigation drawer design guidelines.
//        if (!mUserLearnedDrawer && !mFromSavedInstanceState) {
//            mDrawerLayout.openDrawer(mFragmentContainerView);
//        }
        if (mFromSavedInstanceState) {
            mDrawerLayout.openDrawer(mFragmentContainerView);
        }

        // Defer code dependent on restoration of previous instance state.
        mDrawerLayout.post(new Runnable() {
            @Override
            public void run() {
                mDrawerToggle.syncState();
            }
        });

        mDrawerLayout.setDrawerListener(mDrawerToggle);
    }

    private void selectItem(int sectionViewId) {
        selectedSectionViewId = sectionViewId;

        if (mDrawerLayout != null) {
            mDrawerLayout.closeDrawer(mFragmentContainerView);
        }
        if (mCallbacks != null) {
            mCallbacks.onNavigationDrawerItemSelected(sectionViewId);
        }
    }

    @Override
    public void onAttach(Activity activity) {
        super.onAttach(activity);
        try {
            mCallbacks = (NavigationDrawerCallbacks) activity;
        } catch (ClassCastException e) {
            throw new ClassCastException("Activity must implement NavigationDrawerCallbacks.");
        }
    }

    @Override
    public void onDetach() {
        super.onDetach();
        mCallbacks = null;
    }

    @Override
    public void onSaveInstanceState(Bundle outState) {
        super.onSaveInstanceState(outState);
        outState.putInt(STATE_SELECTED_POSITION, selectedSectionViewId);
    }

    @Override
    public void onConfigurationChanged(Configuration newConfig) {
        super.onConfigurationChanged(newConfig);
        // Forward the new configuration the drawer toggle component.
        mDrawerToggle.onConfigurationChanged(newConfig);
    }

    @Override
    public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
        // If the drawer is open, show the menu_drawer_global app actions in the action bar. See also
        // showGlobalContextActionBar, which controls the top-left area of the action bar.
        if (mDrawerLayout != null && isDrawerOpen()) {
            inflater.inflate(R.menu.menu_drawer_global, menu);
            showGlobalContextActionBar();
        }
        super.onCreateOptionsMenu(menu, inflater);
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        if (mDrawerToggle.onOptionsItemSelected(item)) {
            return true;
        }

        return super.onOptionsItemSelected(item);
    }

    /**
     * Per the navigation drawer design guidelines, updates the action bar to show the menu_drawer_global app
     * 'context', rather than just what's in the current screen.
     */
    private void showGlobalContextActionBar() {
        ActionBar actionBar = getActionBar();
        actionBar.setDisplayShowTitleEnabled(true);
        actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_STANDARD);
        actionBar.setTitle(R.string.app_name);
    }

    private ActionBar getActionBar() {
        return ((ActionBarActivity) getActivity()).getSupportActionBar();
    }

    /**
     * Callbacks interface that all activities using this fragment must implement.
     */
    public interface NavigationDrawerCallbacks {
        /**
         * Called when an item in the navigation drawer is selected.
         */
        void onNavigationDrawerItemSelected(int position);
    }
}
